[MSDN Library June 1998] Bits per Character (100%)

MSDN Library Visual Studio 6.0 > Visual C++ Documentation > Reference > C/C++ Language and C++ Libraries > C Language Reference > Implementation-Defined Behavior > Characters

[MSDN Library September 1992] Bits per Character (84.6899224806202%)

Product Documentation > C/C++ 7.0 > C Language Reference > Appendix B Implementation-Defined Behavior > B.4 Characters